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Finding the Fourth Proportional to 608,405.58, 913,435.65 and 342,352.98

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Solution

The fourth proportional to 608,405.58, 913,435.65 and 342,352.98 is: 513,994.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,405.58 : 913,435.65 = 342,352.98 : x
  2. Step 2: Convert to fraction form
    608,405.58/913,435.65 = 342,352.98/x
  3. Step 3: Cross multiply
    608,405.58x = 913,435.65 × 342,352.98
  4. Step 4: Simplify right side
    608,405.58x = 312,717,416,815.74
  5. Step 5: Solve for x
    x = 312,717,416,815.74/608,405.58
  6. Step 6: Final answer
    x = 513,994.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.